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Meta-analyses examining factors associated with freedom from drop attacks (p values for heterogeneity tests are provided). A: Complete over partial corpus callosotomy (p = 0.23, I2 = 27%, c2 = 6.81). B: Idiopathic over known epilepsy etiology (p = 0.91, I2 = 0%, c2 = 4.09). Both complete callosotomy (A) and idiopathic epilepsy etiology (B) significantly predict drop attack freedom after meta-analysis (p < 0.05). Figure is available in color online only.
